Panasonic cu-3ks19nbu User Manual

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Indoor unit B

Indoor unit A

Ground

Power:
Single-phase,
230/208VAC 60HZ

Power breaker
(not provided)

Outdoor unit 

Terminal board

Label A

Inter-unit cables
#14 (not provided) 

Terminal board

Inter-unit cables
#14 (not provided) 

Terminal board

Label B

Label C

Inter-unit cables
#14 (not provided) 

Inter-unit cables
#14 (not provided)

Terminal board

Terminal board

Label D

A

B

C

D

Power cable (not provided) 
(#12: Less than 85 ft.)

Attach a ground wire to either the

outdoor unit or indoor unit.

If there is a grounding terminal

inside the room, use the grounding

screw inside the indoor unit.

Be sure to apply the provided labels to both

ends of the inter-unit cables to prevent mis-

wiring. The units will not function if the wiring

connections are incorrect.

 A  is the indoor unit with 
refrigerant tubing that is 
connected to service valve 
A (bottom) of the outdoor unit.

refrigerant tubing that is 
connected to service valve B 
(second from the bottom) of 
the outdoor unit.

 B  is the indoor unit with 

Indoor unit C

refrigerant tubing that is 
connected to service valve 
C (third from the bottom) 
of the outdoor unit.

 C  is the indoor unit with 

Indoor unit D

refrigerant tubing that is 
connected to service valve 
D (top) of the outdoor unit.

 D  is the indoor unit with 

1     2

1   2   3   4   5   6   7   8   9  10 11 12

Power supply
(conduit)

Inter Unit
(conduit)

Inter Unit
(conduit)

# ... AWG (American Wire Gauge)

Be sure to correctly align inter-unit cables A, B, C and D.

Use a dedicated air conditioner circuit for power.

To make connections to the outdoor unit, remove the inspection panel and tubing panel.

Do not bring the inter-unit cables or power cable into contact with tubing or service valves.

Use outdoor unit cable fasteners and fasten the inter-unit cables at the location where the cables are double-
sheathed.

Arrange the wiring so that the inter-unit cables are contained in the inspection panel and tubing panel, as shown in
Fig. 31.